I always have and always will wear work boots at work. Steel toe is preferred, but not forced upon anyone, however a work boot is required.
My reasoning is because work boots, tightly laced, will protect your ankle, where sneakers or shoes offer no support, as the ankle is exposed, the work boot offers over the ankle support. Say when you are weedeating, walking and happen to step off in an hole.....there are other scenarios as well.
Just one less thing to worry about. You don't want to sidelined due to a sprained ankle.